Ammann AV 70 X, Operating Manual

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127 AV 70 X
400613A
400181
400613A
400217
MAINTENANCE MANUAL
Remove the cooling circuit drain plug. Let the liquid pour •
down into the vessels set up. The drained amount is ca 15 l
(3,96 gal U.S.).
Check whether pipes within the engine cooling system are •
not damaged, clips missing. Check the radiator condition
whether not damaged, not leaking, and cooling gills not
fouled with impurities. Clean and repair the radiator, if re-
quired.
Clean the cooling circuit:
The process of cleaning the cooling circuit is divided into two
parts.
First part:
Install the drain plug, fill the cooling system with the mix- •
ture of the following ratio: 0,5 kg (1 lb) of sodium carbonate
and 23 l of water, or agents normally available on this base.
When filled, wait for ca 2-3 min until air escapes and the cir-
•
cuit gets filled. Max filling rate is 10 l/min (2,6 gal US/min).
Do not close the tank with overpressure plug.
•
Start the engine and let it run for 5 minutes for liquid tem- •
perature to reach 82°C (180°F).
Stop the engine, drain the cooling circuit and reinstall the drain
plug.
Inspect cooling circuit tightness and liq-
uid level on water gauge.